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Parts

Our amazing offer consists of a great variety of AR-10, AR-15, and pistol parts and accessories. Purchase upper receivers, muzzle devices, handguards, BCG, barrels, triggers, magazine extensions, etc., and start modifying your firearm today.

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  2. Tyrant Designs ITTS 43/43x/48 Trigger For Glock - w/Black Safety
    Tyrant Designs ITTS 43/43x/48 Trigger For Glock - w/Black Safety
    $67.45
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  3. Tyrant Designs ITTS 43/43x/48 Trigger For Glock - w/ Gold Safety
    Tyrant Designs ITTS 43/43x/48 Trigger For Glock - w/ Gold Safety
    $67.45
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  5. Tyrant Designs I.T.T.S. Trigger For Glock Gen 3/4
    Tyrant Designs I.T.T.S. Trigger For Glock Gen 3/4
    $67.45
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  7. Grayguns Sig Sauer P320 Competition Adjustable Trigger System
    Grayguns Sig Sauer P320 Competition Adjustable Trigger System
    $159.00 - $164.00
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  11. Apex Tactical Specialties Polymer Action Enhancement Trigger Kit For Glock 43/43x/48
    Apex Tactical Specialties Polymer Action Enhancement Trigger Kit For Glock 43/43x/48
    $66.50
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  13. Timney Triggers Alpha Competition Trigger for Glock - Gen 5
    Timney Triggers Alpha Competition Trigger for Glock - Gen 5
    $168.99
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  14. Timney Triggers Alpha Competition Series For Glock Trigger - Gen 3-4
    Timney Triggers Alpha Competition Series For Glock Trigger - Gen 3-4
    $168.99
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  15. Agency Arms Drop In Trigger For Glock Gen 5 - 9mm, .40, .357
    Agency Arms Drop In Trigger For Glock Gen 5 - 9mm, .40, .357
    $135.00
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  16. Ascalon Arms ERGON CZ P-10 Trigger
    Ascalon Arms ERGON CZ P-10 Trigger
    $49.00
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Firearm parts

Rainier Arms is the best place to purchase parts and accessories for your rifle or pistol online, and all that for more than affordable prices. Look no further, you can find here everything that comes to your mind and more! The best manufacturers in the business, like Killer Innovations, Lantac, Next Level Armament, Rainier Arms LLC, Apex Tactical Specialties, and many more are here to offer you their high-quality products. Select your preferred part and make your AR-10, AR-15 or pistol a unique piece of firearm.

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What are the most common barrel thread patterns for pistols and rifles?

For .22LR, .22MAG, .17HMR, 9mm, and .223/5.56 NATO the most common thread pattern would be 1/2x28, with some exceptions for 9mm and .223/5.56 NATO firearms. As for .308/7.62mm and .338 Lapua Magnum, the thread pattern that is most commonly used is 5/8x24, with a few exceptions. Another typical thread pattern is 9/16x24 and it is mostly used for .40 S&W weapons.

Single triggers or two-stage triggers?

Whichever you choose, you cannot go wrong. The single trigger is fast and simple to use; as soon as you apply a small amount of pressure, the firearm goes off. Two-stage trigger is extremely accurate and you know precisely when the shot is going to be fired. The first stage prepares you for the second one, when the trigger pushes the hammer up causing the firearm to discharge. So, it is up to you to make a choice.

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